var menu=function(){
	var t=15,z=50,s=6,a,w;
	function dd(n){
		this.n=n; 
		this.h=[]; 
		this.c=[]
	}
	dd.prototype.init=function(p,c){
		a=c; 
		w=document.getElementById(p); 
		var s=w.getElementsByTagName('ul'), l=s.length, i=0;
		for(i;i<l;i++){
			var h=s[i].parentNode; this.h[i]=h; this.c[i]=s[i];
			h.onmouseover=new Function(this.n+'.st('+i+',true)');
			h.onmouseout=new Function(this.n+'.st('+i+',false,'+i+')');
		}
	}
	dd.prototype.st=function(x,f,i){
		var c=this.c[x], h=this.h[x], p=h.getElementsByTagName('a')[0];
		clearInterval(c.t); 
		c.style.overflow='hidden';
		if(f){
			p.className+=' '+a;
			if(!c.mh){
				c.style.display='block'; 
				c.style.height=''; 
				c.mh=c.offsetHeight; 
				c.style.height=0
			}
			if(c.mh==c.offsetHeight){
				c.style.overflow='visible';
			} else {
				c.style.zIndex=z; 
				z++; 
				c.t=setInterval(function(){sl(c,1)},t);
			}
		} else {
			p.className=p.className.replace(a,''); 
			c.t=setInterval(function(){sl(c,-1,i)},t)
		}
	}
	function sl(c,f,i){
		var h=c.offsetHeight;
		if((h<=0 && f!=1)||(h>=c.mh && f==1)){
			if(f==1){
				c.style.filter=''; 
				c.style.opacity=1; 
				c.style.overflow='visible';
			}
			clearInterval(c.t); return
		}
		var d=(f==1) ? Math.ceil((c.mh-h)/s) : Math.ceil(h/s), o=h/c.mh;
		c.style.opacity=o; 
		c.style.filter='alpha(opacity='+(o*100)+')';
		var tmp = h+(d*f);
		c.style.height=tmp+'px'
		if (tmp==0&&f==-1&&i==0) w.style.display = 'none';
	}
	return{dd:dd}
}();